Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time.
Artificial stocking practices are widely used by resource managers worldwide, in order to sustain fish populations exploited by both recreational and commercial activities, but their benefits are controversial. Former practices involved exotic strains, although current programs rather consider artif...
Published in: | Ecology and Evolution |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2017
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Online Access: | https://serval.unil.ch/notice/serval:BIB_E4368D5DAB1A https://doi.org/10.1002/ece3.3073 https://serval.unil.ch/resource/serval:BIB_E4368D5DAB1A.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E4368D5DAB1A6 |
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ftunivlausanne:oai:serval.unil.ch:BIB_E4368D5DAB1A 2024-02-11T09:59:50+01:00 Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time. Savary, R. Dufresnes, C. Champigneulle, A. Caudron, A. Dubey, S. Perrin, N. Fumagalli, L. 2017 application/pdf https://serval.unil.ch/notice/serval:BIB_E4368D5DAB1A https://doi.org/10.1002/ece3.3073 https://serval.unil.ch/resource/serval:BIB_E4368D5DAB1A.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E4368D5DAB1A6 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.3073 info:eu-repo/semantics/altIdentifier/pmid/28770060 info:eu-repo/semantics/altIdentifier/pissn/2045-7758 info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_E4368D5DAB1A6 https://serval.unil.ch/notice/serval:BIB_E4368D5DAB1A doi:10.1002/ece3.3073 urn:issn:2045-7758 https://serval.unil.ch/resource/serval:BIB_E4368D5DAB1A.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E4368D5DAB1A6 info:eu-repo/semantics/openAccess Copying allowed only for non-profit organizations https://serval.unil.ch/disclaimer Ecology and Evolution, vol. 7, no. 14, pp. 5201-5211 Salmonids Salvelinus conservation‐based stocking programs fisheries management genetic bottleneck genetic integrity historical DNA microsatellites info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion 2017 ftunivlausanne https://doi.org/10.1002/ece3.3073 2024-01-22T00:56:36Z Artificial stocking practices are widely used by resource managers worldwide, in order to sustain fish populations exploited by both recreational and commercial activities, but their benefits are controversial. Former practices involved exotic strains, although current programs rather consider artificial breeding of local fishes (supportive breeding). Understanding the complex genetic effects of these management strategies is an important challenge with economic and conservation implications, especially in the context of population declines. In this study, we focus on the declining Arctic charr (Salvelinus alpinus) population from Lake Geneva (Switzerland and France), which has initially been restocked with allochtonous fishes in the early eighties, followed by supportive breeding. In this context, we conducted a genetic survey to document the evolution of the genetic diversity and structure throughout the last 50 years, before and after the initiation of hatchery supplementation, using contemporary and historical samples. We show that the introduction of exotic fishes was associated with a genetic bottleneck in the 1980-1990s, a break of Hardy-Weinberg Equilibrium (HWE), a reduction in genetic diversity, an increase in genetic structure among spawning sites, and a change in their genetic composition. Together with better environmental conditions, three decades of subsequent supportive breeding using local fishes allowed to re-establish HWE and the initial levels of genetic variation. However, current spawning sites have not fully recovered their original genetic composition and were extensively homogenized across the lake. Our study demonstrates the drastic genetic consequences of different restocking tactics in a comprehensive spatiotemporal framework and suggests that genetic alteration by nonlocal stocking may be partly reversible through supportive breeding. We recommend that conservation-based programs consider local diversity and implement adequate protocols to limit the genetic homogenization of this ... Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Université de Lausanne (UNIL): Serval - Serveur académique lausannois Arctic Ecology and Evolution 7 14 5201 5211 |
institution |
Open Polar |
collection |
Université de Lausanne (UNIL): Serval - Serveur académique lausannois |
op_collection_id |
ftunivlausanne |
language |
English |
topic |
Salmonids Salvelinus conservation‐based stocking programs fisheries management genetic bottleneck genetic integrity historical DNA microsatellites |
spellingShingle |
Salmonids Salvelinus conservation‐based stocking programs fisheries management genetic bottleneck genetic integrity historical DNA microsatellites Savary, R. Dufresnes, C. Champigneulle, A. Caudron, A. Dubey, S. Perrin, N. Fumagalli, L. Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time. |
topic_facet |
Salmonids Salvelinus conservation‐based stocking programs fisheries management genetic bottleneck genetic integrity historical DNA microsatellites |
description |
Artificial stocking practices are widely used by resource managers worldwide, in order to sustain fish populations exploited by both recreational and commercial activities, but their benefits are controversial. Former practices involved exotic strains, although current programs rather consider artificial breeding of local fishes (supportive breeding). Understanding the complex genetic effects of these management strategies is an important challenge with economic and conservation implications, especially in the context of population declines. In this study, we focus on the declining Arctic charr (Salvelinus alpinus) population from Lake Geneva (Switzerland and France), which has initially been restocked with allochtonous fishes in the early eighties, followed by supportive breeding. In this context, we conducted a genetic survey to document the evolution of the genetic diversity and structure throughout the last 50 years, before and after the initiation of hatchery supplementation, using contemporary and historical samples. We show that the introduction of exotic fishes was associated with a genetic bottleneck in the 1980-1990s, a break of Hardy-Weinberg Equilibrium (HWE), a reduction in genetic diversity, an increase in genetic structure among spawning sites, and a change in their genetic composition. Together with better environmental conditions, three decades of subsequent supportive breeding using local fishes allowed to re-establish HWE and the initial levels of genetic variation. However, current spawning sites have not fully recovered their original genetic composition and were extensively homogenized across the lake. Our study demonstrates the drastic genetic consequences of different restocking tactics in a comprehensive spatiotemporal framework and suggests that genetic alteration by nonlocal stocking may be partly reversible through supportive breeding. We recommend that conservation-based programs consider local diversity and implement adequate protocols to limit the genetic homogenization of this ... |
format |
Article in Journal/Newspaper |
author |
Savary, R. Dufresnes, C. Champigneulle, A. Caudron, A. Dubey, S. Perrin, N. Fumagalli, L. |
author_facet |
Savary, R. Dufresnes, C. Champigneulle, A. Caudron, A. Dubey, S. Perrin, N. Fumagalli, L. |
author_sort |
Savary, R. |
title |
Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time. |
title_short |
Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time. |
title_full |
Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time. |
title_fullStr |
Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time. |
title_full_unstemmed |
Stocking activities for the Arctic charr in Lake Geneva: Genetic effects in space and time. |
title_sort |
stocking activities for the arctic charr in lake geneva: genetic effects in space and time. |
publishDate |
2017 |
url |
https://serval.unil.ch/notice/serval:BIB_E4368D5DAB1A https://doi.org/10.1002/ece3.3073 https://serval.unil.ch/resource/serval:BIB_E4368D5DAB1A.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E4368D5DAB1A6 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Ecology and Evolution, vol. 7, no. 14, pp. 5201-5211 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.3073 info:eu-repo/semantics/altIdentifier/pmid/28770060 info:eu-repo/semantics/altIdentifier/pissn/2045-7758 info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_E4368D5DAB1A6 https://serval.unil.ch/notice/serval:BIB_E4368D5DAB1A doi:10.1002/ece3.3073 urn:issn:2045-7758 https://serval.unil.ch/resource/serval:BIB_E4368D5DAB1A.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_E4368D5DAB1A6 |
op_rights |
info:eu-repo/semantics/openAccess Copying allowed only for non-profit organizations https://serval.unil.ch/disclaimer |
op_doi |
https://doi.org/10.1002/ece3.3073 |
container_title |
Ecology and Evolution |
container_volume |
7 |
container_issue |
14 |
container_start_page |
5201 |
op_container_end_page |
5211 |
_version_ |
1790595580057092096 |